Car-coupling



(No Model.) s Sheets-Shea? 1-. E. P. EASTWIOK, J1.

CAR COUPLING.

I By

ATTORNEYS.

N PEYERS PholoLithograpber, Wanhi nnnnnnn C.

3 Sheets-Sheet 3.

(No Model.)

B. P. EASTWIOK, Jr.

GAR GOUPLING.

Patented Jul so, 1889.

A TTORNEYS.

N. PETERS. mowumn m w, \Vlihing'on, o. c.

UNITED STATES PATENT OFFICE.

EDWARD P. EASTWICK, JR, OF NEWV YORK, ASSIGNOR TO E. CLINTON CLARK, OFSARATOGA, NEIV YORK.

CAR-COUPLING.

SPECIFICATION forming part of Letters Patent No. 407,821, dated July 30,1889.

Appli i n fi September 19, 1888. Serial No. 285,793. (No model.)

To aZZ whom it may concern:

Be it known that I, EDWARD P. EAs'rwIcK, J r., of the city, county, andState of New York, have invented a new and Improved Car-Coupler, ofwhich the following is a'full, clear, and exact description.

My invention relates to an improvement in car-couplers, and has for itsobject to provide a means whereby the movement of the jaws will not becontrolled by the axis, which has heretofore been the guiding center,and wherein the locking side of the pin will be coincident, orapproximately so, with the radial line from the center of revolution,thus taking the strain perpendicular to its surface and preventing anytendency to sliding andwearing movement. Its object is also to providegreater bearing-surfaces bot-h for the knuckle and pin than hasheretofore prevailed and to reduce the strain on the locking-pin, thelatter effect being accomplished by making the distance of thelocking-pin from the center of revolution as great as practicable, whichalso prevents any lost motion at the pin being multiplied at thelocking-j aws.

The invention consists in the novel construction and combination of theseveral parts and the special construction of the knuckle, as will behereinafter fully set forth, and pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure 1 is a perspective view of the coupler applied to a car. Fig. 2is a perspective View of the detached knuckle. Fig. 3 illustratescouplers in alocked posit-ion, one c0upler being in horizontal section.Fig. 4c is a vertical section taken on line 00 m of Fig. 1; and Fig. 5is a plan view of a coupler, illustrating in dotted lines the severallines of construction whereby the several curves are formed.

In carrying out the invention the car-coupler is composed of threeparts-namely, a hollow draw-head A, a rocking jaw or knuckle B, and alocking-pin C.

The draw-head A is formed with a horn or' projection a at one side, anessentially central opening a, and a second opening a in the sideopposite to that carrying the aforesaid horn or projection, which latteropening is arc-shaped and is adapted to receive the arcshaped stem ofthe j aw or knuckle B. The width of the opening a is determined and thetwo openings created by perpendicular lugs or ribsbb',formed integral,respectively, with the upper and lower walls of the drawhead, as bestshown in Fig. 4. The ribs 1) and b are in vertical alignment, and spaceis made to intervene their approaching ends. The ribs Z) and b arecircular, as illustrated in Fig. 3, and also serve as guides for thestem of the knuckle.

In the'upper and lower walls of the drawhead, between the ribs 1) b andthe nearest side wall, close to the former, a circular groove or channelb is produced, one channel vertically aligning the other.

The arc-shaped stem of the jaw or knuckle B, which is entered at theopening a and partially revolves within the draw-head, has its center ofmotion at the axisb and is guided, as aforesaid, by the ribsb and b andthe side walls forming the channel 19 The stem of the knuckle or jaw Bis held to slide inthe draw-head by shoulders d d, formed integral withthe upper and lower sides of the inner member B, as best shown in Fig. 2and dotted lines, Fig. 3. The shoulders d coincide with the grooves orchannels 79 in which they are adapted to enter and slide, as

shown in Fig. 4? Upon one side of the jaw or knuckle a shoulder d isformed, purposed to arrest the movement of said jaw by striking againstthe draw-head at (1 The arcshaped stem of the jaw or knuckle is providedwith fin-shaped web or wing E, purposed to confine and limit themovement of the same, which web or wing constituting a part of theknuckle projects from one side, as best shown in Figs. 2 and 3. On theupper side of the wing a stop-lug E is located, which, in conjunctionwith the pin 0, arrests 95 the outward movement of the knuckle, theacting faces of which 'wing and lug are on radial lines from the centerof motion of the The pin 0 is preferably rectangular in crosssection andprovided with a projecting head 6 and a reduced lower end, whereby ashoulder 6 is formed. The pin is loosely fitted in pin-apertures e and 6adapted, respectively, to the contour of the large and reduced portionof the pin, as best shown in Fig. 4. At one side of the lowerpin-aperture e a second parallel aperture e is made, through which anysnow accumulated in the draw-head may be made to pass. The said aperture6 is normally covered by the pin-shoulder e, which shouldered portion ofthe pin is seated in the bottom of the draw-head, as illustrated in Fig.

4. In the lower end of the pin there is a hole,

through which passes a bar 6 which determines the distance the pin maybe drawn up.

The draft is virtually from the pin, as when the knuckle is in a coupledposition the outer end of the web E bears tightly against the rear ofthe pin 0, as shown in Fig. 3. When the knuckle is in an uncoupledposition, the pin having been drawn upward and the outer or hook surfaceof the knuckle swung to the side, the web or wing- E is also drawn out,and the shoulder in the pin, when the latter is released, will rest uponthe said web.

It will be observed that the movement of the jaw or knuckle is notcontrolled by the axis, which heretofore has been the guidingcenter, andthat the jaw does not have a bearing in the axis b when in use, but actsindependently of it, the movement of the said jaw being controlled anddirected by the shoulders d entering the channels 6 It will also befurther observed that the locking-pin is so located that the lockingside is coincident, or

approximately so, with the radial line from the center of revolution,and that the distance of said pin from the center of revolution is madeas great as practicable with reference to the distance of the line ofdraft from the same center. Thus the strain upon the pin is made to comepractically in a line perpendicular to its surface, thereby reducing toa minimum any tendency to wear, and at the same time preventing any lostmotion being multiplied at the engaging surfaces of the knuckle-hooks.

The pin may be elevated in any approved manner. In Fig. 5 I illustrateby a diagram the lines upon which the curved hooked end of the knuckleand the curved face of the draw-head are constructed, as it is desirablein this form of coupler for satisfactory and reliable operation that thesaid curved lines be accurately drawn. The pin, though preferably maderectangular in crosssection, need not necessarily be so, but may beapproximately of that form.

When a coupler is-constructed as herein shown and described, thesmallest possible strain is brought to bear upon the pin, and any lostmotion at the pin is effectually prevented from multiplying at theengaging surface of the locking-j aws. A large bearingsurface for theknuckle upon the draw-head is also provided and the wear thusdistributed, and a large bearing-surface upon the pin is obtained in adirection perpendicular to its bearing surface. The ribs of the knuckleare made to fit snugly in the channels of the draw-head.

Having thus fully described my invention, I claim as new and desire tosecure by Letters Patent 1. In a car-coupler, the combination, with adraw-head having an arc-shaped opening formed therein, of a movableknuckle provided with an arc-shaped stem and a web or wing extendingfrom said stem, substantially as described.

2. In a carcoupler, the combination, with a drawhead having anarc-shaped opening formed therein, of a movable knuckle provided with anarc-shaped stem, a web or wing extending from said stem, and a lookingdevice engaging said web or wing, substantially as described.

3. -In a car-coupler, the combination, with a draw-head having anarcshaped opening formed therein, of a movable knuckle provided with anarc-shaped stem and a web or wing of less vertical depth than said stem,substantially as described.

4. In a car-coupler, the combination, with an essentially hollowdraw-head provided with interior top and bottom circular channels, of alocking jaw or knuckle having formed upon the inner section or stemcircular ribs and a wing extending outward from the said inner sectionor stem, substantially as shown and described.

5. In a coupler, the combination, with an essentially hollow draw-headprovided with interior top and bottom circular channels, a locking jawor knuckle having formed upon the inner section or stem circular ribs,and a wing extending from the said inner section or stem, of alocking-pin passed through the draw head, provided with a recess at thelower end, whereby a shoulder e is formed, adapted torest upon the ringwhen the latter is in an uncoupled position, substantially as shown anddescribed.

6. In a coupler, the combination, with an essentially hollow draw-headprovided with interior top and bottom circular channels, a locking jawor knuckle having formed upon the inner section or stem top and bottomcircular ribs, and a wing extending from the said inner section or stemprovided with a stop, of a pin passedthrough the draw-head coincidentwith the radial line from the center of revolution of the knuckle andprovided with a longitudinal recess in one side, forming a shoulder c,all adapted to operate substantially as shown and described.

7. The combination, with an essentially hollow draw-head provided withan interior top and bottom channel, of a locking jaw or knuckle providedwith a buffing-surface, ribs formed top and bottom of the interiorsection or stem of the jaw, a wing extending from the said inner sectionor stem, a lug integral with said wing, and a locking-pin rectangular incross-section provided with a reduced lower surface, whereby the pinwill lock the jaw in an open position at the end of the wing carryingsaid lug, the plane of which lug is in an approximately radial line fromthe center of motion, substantially as shown and described.

8. In a car-coupler, the locking-j aw, substantially as shown anddescribed, consisting 10 of an outer knuckle-section, an inner pivotalsection or stem provided with a circular rib at top and bottom, and aWing extending horizontally from said pivotal section or stem providedwith a stop-lug, substantially as shown and described.

EDW. P. EASTWIOK, JR.

Witnesses:

FREDERICK ROBERT, Row. P. EASTWICK.

